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At time t=0 N(1) nuclei of decay constan...

At time `t=0 N_(1)` nuclei of decay constant `lambda_(1)& N_(2)` nuclei of decay constant `lambda_(2)` are mixed. The decay rate of the mixture at time 't' is:

A

`N_(1)N_(2)e^(-(lambda_(1)+lambda_(2))t)`

B

`(N_(1)/N_(2))e^(-(lambda_(1)-lambda_(2))t)`

C

`(N_(1)lambda_(1)e^(-(lambda_(1)t))+N_(2)lambda_(2)e^(-lambda_(2)t))`

D

`N_(1)lambda_(1)N_(2)lambda_(2)e^(-(lambda_(1)+lambda_(2))t)`

Text Solution

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The correct Answer is:
C
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